The temperature acclimation potential of tropical bryophytes.

The temperature acclimation potential of tropical bryophytes.
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热带苔藓植物的温度适应潜力

DOI:
10.1111/plb.12037
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发表时间:
2013
期刊:
影响因子:
3.9
通讯作者:
M.Y. Bader
M.Y. Bader
中科院分区:
生物学2区
文献类型:
--
作者:
Wagner;G. Zotz ;M.Y. Bader

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热带潮湿森林苔藓植物生物量和多样性从高海拔向低地急剧下降。如果山地物种无法使其代谢率适应低地温度,那么高温下的高呼吸碳损失可能部分解释这种模式。我们从两个海拔高度(海拔1200和500米)移植了10个branite物种。到巴拿马的较低(温暖)海拔(500米和海平面)。我们研究了移植后2.5个月的CO2交换短期温度适应以及21个月的存活和生长。没有发生短期驯化,并且在较长的时间尺度上,移植样品中死亡率最高,生长最低。然而,大多数物种的少数移植样品在整个实验中存活下来,并以与对照组相似的生长速度完成。生长速率的恢复表明温度适应,尽管在较小的随机样品中没有可测量的代谢变化。这种适应甚至补偿了由于更快的干燥而导致的较短的CO2吸收期。然而,这些物种并不丰富的低地森林,可能是由于分散或建立的限制。物种内适应潜力的明显异质性可能使种群能够在当地适应,避免在气候变暖的情况下被迫上山。
Bryophyte biomass and diversity in tropical moist forests decrease dramatically from higher altitudes towards the lowlands. High respiratory carbon losses at high temperatures may partly explain this pattern, if montane species are unable to acclimatise their metabolic rates to lowland temperatures. We transplanted ten bryophyte species from two altitudes (1200 and 500 m a.s.l.) to lower (warmer) altitudes (500 m and sea level) in Panama. We studied short‐term temperature acclimation of CO2exchange for 2.5 months, and survival and growth for 21 months following transplantation. Short‐term acclimation did not occur, and on a longer time scale mortality was highest and growth lowest in the transplanted samples. A few transplanted samples of most species, however, survived the whole experiment and finished with growth rates similar to controls. This recovery of growth rate suggests temperature acclimation, in spite of no measurable metabolic changes in smaller random samples. This acclimation even compensated for shorter periods of CO2uptake due to more rapid drying. Nevertheless, these species are not abundant in lowland forests, perhaps due to dispersal or establishment limitation. The apparent heterogeneity of the acclimation potential within species may allow populations to adapt locally and avoid being forced uphill under climatic warming.
DOI: --
发表时间: 1976
期刊:
影响因子: --
作者:
P. Hicklenton;W. Oechel
通讯作者: W. Oechel
DOI: 10.1093/aob/mcs267
发表时间: 2013
期刊: Annals of botany
影响因子: 4.2
作者:
Wagner;G. Zotz;N. Salazar Allen ;M.Y. Bader
通讯作者: M.Y. Bader
CO2交换与Rhacomitrium lanuginosum和Dicranum elongatum的生长
DOI: --
发表时间: 1975
期刊:
影响因子: --
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P. Kallio;S. Heinonen
通讯作者: S. Heinonen
DOI: --
发表时间: 1994
期刊:
影响因子: --
作者:
O. Lange;B. Büdel;H. Zellner;G. Zotz;A. Meyer
通讯作者: A. Meyer
DOI: 10.1007/978-3-642-19106-0_5
发表时间: 2011-01-01
期刊: PLANT DESICCATION TOLERANCE
影响因子: --
作者:
Lakatos, Michael
通讯作者: Lakatos, Michael